34 lines
961 B
C
34 lines
961 B
C
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/*
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* @file gpio_helper.h
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* @brief General I/O helper
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*
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* @date Aug 25, 2013
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* @author Andrey Belomutskiy, (c) 2012-2014
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*/
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#ifndef GPIO_HELPER_H_
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#define GPIO_HELPER_H_
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#define INITIAL_PIN_STATE -1
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/**
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* @brief Single output pin reference and state
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*/
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typedef struct {
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GPIO_TypeDef *port;
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int pin;
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/**
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* we track current pin status so that we do not touch the actual hardware if we want to write new pin bit
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* which is same as current pin value. This maybe helps in case of status leds, but maybe it's a total over-engineering
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*/
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int currentLogicValue;
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} OutputPin;
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void initOutputPin(const char *msg, OutputPin *outputPin, GPIO_TypeDef *port, uint32_t pinNumber);
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void initOutputPinExt(const char *msg, OutputPin *outputPin, GPIO_TypeDef *port, uint32_t pinNumber, iomode_t mode);
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int getLogicPinValue(OutputPin * outputPin);
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void setPinValue(OutputPin * outputPin, int electricalValue, int logicValue);
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#endif /* GPIO_HELPER_H_ */
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